memory.h

/* * arch/arm/mach-versatile/include/mach/memory.h * * Copyright (C) 2003 ARM Limited * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */#ifndef __ASM_ARCH_MEMORY_H#define __ASM_ARCH_MEMORY_H/* * Physical DRAM offset. */#define PHYS_OFFSET UL(0x00000000)/* * Virtual view <-> DMA view memory address translations * virt_to_bus: Used to translate the virtual address to an * address suitable to be passed to set_dma_addr * bus_to_virt: Used to convert an address for DMA operations * to an address that the kernel can use. */#define __virt_to_bus(x) ((x) - PAGE_OFFSET)#define __bus_to_virt(x) ((x) + PAGE_OFFSET)#endif